Published on June 28, 2026, the summary says FUTEX_PRIVATE_FLAG may reduce lock latency between threads in the same process by letting the kernel ignore a shared global hash table.
The item describes how, in a multiprocess system, futex waiters use a global kernel hash table. For threads sharing memory within the same process, FUTEX_PRIVATE_FLAG tells the kernel that this shared table can be ignored; according to the text, this may reduce lock latency for those synchronizations. The item was published on June 28, 2026.
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